EP 2159980 A2 20100303 - Apparatus and method for receiving orthogonal frequency division multiplexed signals
Title (en)
Apparatus and method for receiving orthogonal frequency division multiplexed signals
Title (de)
Vorrichtung und Verfahren zum Empfang von orthogonalen Frequenzmultiplexsignalen
Title (fr)
Appareil et procédé de réception de signaux multiplexés à division de fréquence orthogonale
Publication
Application
Priority
JP 2008223606 A 20080901
Abstract (en)
An object of the present invention is to provide an orthogonal frequency division multiplexed signal receiving apparatus that is capable of compensating for channel estimation errors due to the receipt of signals when moving fast and thereby properly reproducing transmission data. Such an orthogonal frequency division multiplexed signal receiving apparatus (100) includes a discrete Fourier transform unit (1) for transforming a signal that has been frequency-translated to a desired frequency, by the discrete Fourier transform, to demodulate the signal into a sequence of subcarriers, a channel estimation unit (2) for estimating a channel characteristic for each subcarrier, an equalization unit (3) for outputting an equalized signal that is obtained by equalizing the subcarriers and a header signal that is synchronized with a received symbol, a timing generation unit (4) for generating, based on the header signal, a timing signal used for downstream processing, a memory unit (5) for repeatedly outputting an equalized signal n times, where n ‰¥ 2 , a filtering unit (6) for filtering an equalized signal based on a filter coefficient and outputting a signal that is compensated for the nth equalized signal as a demodulated signal, and a coefficient update unit (7) for computing a filter coefficient and updating the filter coefficient to a computed filter coefficient in the filtering unit (6).
IPC 8 full level
H04L 27/26 (2006.01)
CPC (source: EP)
H04L 27/2647 (2013.01); H04L 25/0202 (2013.01)
Citation (applicant)
JP 2000236313 A 20000829 - JISEDAI DIGITAL TELE HOSO SYS, et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2159980 A2 20100303; EP 2159980 A3 20101020; EP 2159980 B1 20120215; AT E546003 T1 20120315; JP 2010062643 A 20100318; JP 4545209 B2 20100915
DOCDB simple family (application)
EP 09007674 A 20090610; AT 09007674 T 20090610; JP 2008223606 A 20080901